Animal Breeder 2 (Japan) is one of those weird little Game Boy gems that flew under the radar outside Japan. It's a sequel, sure, but honestly, the first one wasn't exactly a household name either. You're basically running a virtual pet shop—breeding, raising, and selling animals, but with that classic late '90s pixel charm.

The gameplay's simple at first: pick a starter animal, feed it, play with it, and watch it grow. But then you realize some breeds have hidden traits, and suddenly you're deep in spreadsheets trying to hatch the perfect rare creature. The pixel art's surprisingly detailed for a Game Boy title—I spent way too long just watching the animations of these tiny animals doing their thing.

It's got that addictive "just one more breeding cycle" hook, even if the menus are a bit clunky by modern standards. If you ever wanted to run a chaotic digital pet shop with zero consequences, this is your weird little time capsule.